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Full text of "The manufacture and properties of iron and steel"

THE HISTORY AND SHAPE OP,THE TEST-PIECE.
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;' :"     '   TABLE XVI-Q.   •    \ ;    ;  -/;' ". ,  :-.": Physical Properties of IBye-Barg.   •            .'',.',,
.—The bar was broken in full^sized section, but the 'elongation hene given is the percentage in the 12 inches Which included the fracture.' "Narrow"-signifies not over 6 inches wide, the average being about 5 inches; "Wide?', signifies over 6 Inches wide, the average being about 7 inches. ," Thin " signifies" under 1% inches thick, the average being about 1 inch. "Thick" signifies not less than 1% inches thick, the average being about l% Inches.
I Name of maker.	Method of manufacture.	Limits of ultimate strengthen group ; pounds per square inch.	Relative thickness of piece.	Relative width of piece.	Number of ieats . " in average.	Average ultimate , strength,; . pounds per square inch.	Average elastic limit> pounds per square inch-.:	Average elastic ratio; percent.	Elongation in 12 Inches •; per cenra	Reduction ;of area ; perc&nt.
	; Open-hearth.	54000 to 64000	Thin	Narrow Wide	109 18"	61528 59950?	89017 37937-	63.4 j63.gr '.	84.72 i 88.72 ••	49.6 48.6 '~
			Thick	Narrow Wide	83 11.	60838 60307-	87470. 86688	61.9 -60.8 -	-87.48" 89.61	50.0— 46.8
		64000 to 74000	Thin	Narrow	-72.	66702	; 41967 :	62.9 I	82.58	47.5
			Thick	Narrow '      ''	i19-	«(657Q,.	j 41853	62.9 !	84.22	47.5
A B 0 (V	Bessemer.	54000 to 04000	vThiiv ;	, Narrow Wide	102 -6;.	69557 6,1988 '	86086 88706	60.6 ! 62.4 I	&.48 86.20	'60.8: 44.2
			.Thick"	Narrow Wide	19 26,	60855 60982-	136166. ! 87019	59.4' 60.8 :	84.16 87.96	47.8 48.1
		64000 ' to 74000	,Thin	Narrow Wide	22 6	66441 Q6947	41665 89380	62.7 58.7	81.98 ,82.48	47.3 45.0.
			Thick	Narrow Wide	8 8	67870 6^263	87108' 87290	55.1 55.4 J	80.90 83.00	42,6 418
	• Bessemer.	54000 to 64000	,Thin	Narrow Wide	47 19	59879 58582	85395 85141	59.6 60.0	84.08 87.47	49.2 47.8
			Thick	Narrow Wide	18 61	59355 59536	84162 84403	57.6 57.8	,84.83 86.68	46.4 46.4
		64000 to 74000,	Thin	Narrow Wide	21 5	66231 67184	40756 40766	61.5 60.7	80.19 85.76	477 49.3
			Thick	Wido	•22	66874	87880	56.«	83.02	45.0
	*tl]5|n-hearth.	54000 to •64000	Thin	Narrow Wid6	108 28	59018 59950	88901 82650	57.4 54.5	83.79 86.65	48.8 * 44.8 '
			Thick	Narrow Wide	24, 55	58985 58454	33460 81971	56.7 54.7 ,	84.80 89.22	46.6 48.fl"™-
		64000 to J4000	Thi»	Narrow Wide	23 8,	66280 69S§0	J 40882 89506,	60.9 57.0 j	80.13 ,8030	44."7 86.3 >
			Thick	j Narijow	,8	&690;	J88427t	58.5 |	83,50	447
	i r V • £	'    -54000 to 64000 '	Thin	Narrow Wid£	121, 18	S	85592 8405$	58.8 57.4	88.57 86.53	"48.7 46.1
			Thick;	Narrow We	20 21	60870. <02^	84440 83245	56.6 55.2	,85.20 *'89.0T	48.2, 4^
		64000 to 74000	Thin	Ni&nlow	§li	<(65J5	89206	58.9	JVM	464
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